.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--t-slow), border-color var(--t-slow), backdrop-filter var(--t-slow);
}

.nav--scrolled {
  background: rgba(5, 18, 40, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom-color: var(--color-border-subtle);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--section-h);
}

/* ── Logo ──────────────────────────────────────────────── */

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.nav__logo-name {
  font-family: var(--font-display);
  font-size: 1.7rem;
  letter-spacing: 0.08em;
  color: var(--color-text-primary);
  line-height: 1;
}

.nav__logo-divider {
  width: 1.5px;
  height: 28px;
  background: var(--color-accent);
  opacity: 0.7;
}

.nav__logo-sub {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.nav__logo-sub-top {
  font-family: var(--font-body);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  line-height: 1;
}

.nav__logo-sub-bot {
  font-family: var(--font-body);
  font-size: 0.55rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  line-height: 1;
}

/* ── Links ─────────────────────────────────────────────── */

.nav__links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav__link {
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--t-fast);
  position: relative;
  padding-bottom: 3px;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--color-accent);
  transition: width var(--t-mid);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-text-primary);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

/* ── CTA ───────────────────────────────────────────────── */

.nav__cta {
  padding: 0.55rem 1.3rem;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
}

/* ── Hamburger ─────────────────────────────────────────── */

.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  background: transparent;
  border: none;
  padding: 4px;
  z-index: 1100;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--color-text-primary);
  transition: all var(--t-mid);
  transform-origin: center;
}

.nav__hamburger.open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav__hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav__hamburger.open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ── Mobile drawer overlay ─────────────────────────────── */

.nav__overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(3, 16, 31, 0.8);
  z-index: 1050;
  opacity: 0;
  transition: opacity var(--t-slow);
}

.nav__overlay.open {
  opacity: 1;
}

/* ── Mobile drawer ─────────────────────────────────────── */

.nav__drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(320px, 85vw);
  background: var(--color-bg-dark);
  border-left: 1px solid var(--color-border-subtle);
  z-index: 1060;
  display: flex;
  flex-direction: column;
  padding: calc(var(--nav-height) + 2rem) 2rem 2rem;
  transform: translateX(100%);
  transition: transform var(--t-slow);
  gap: 0.5rem;
}

.nav__drawer.open {
  transform: translateX(0);
}

.nav__drawer-link {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border-subtle);
  transition: color var(--t-fast);
}

.nav__drawer-link:hover {
  color: var(--color-accent);
}

.nav__drawer-cta {
  margin-top: 1.5rem;
  text-align: center;
}

/* ── Responsive ────────────────────────────────────────── */

@media (max-width: 768px) {
  .nav__links {
    display: none;
  }

  .nav__cta.desktop-only {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

  .nav__overlay {
    display: block;
  }
}